* feat: Update base image to Alpine 3.23.4
Alpine 3.23.4 fixes the following:
musl
CVE-2026-6042
CVE-2026-40200
openssl
CVE-2026-31790
CVE-2026-28387
CVE-2026-28388
CVE-2026-28389
CVE-2026-28390
CVE-2026-31789
* chore: Update supported versions in SECURITY.md
* chore: Update README for Alpine and version changes
* chore: Update copyright years in LICENSE file
Updated copyright years for Joshua Piper and Burnett01.